Handle for heated tools



Feb. 22 1927.

F. KUHN ET AL HANDLE FdR HEATED TOOLS Filed April 23, 1923 Elecln'cal Conduif w m s U 4 K Ifl n M .2 v a Z M reams Feb; 22, 192 7.

v Liam UNITED I STATES PATENT, OFFICE.

. rm]: mum arm-mummies n. Tnom or DETROIT, 'mcn renf, ilssienoas To AMERICAN ELECTRICAL HEATER T101! 01' IIGHIGAN.

column, or nnTnoIT, moment, a someoneman Ton nnarnn Toons Application filed April 2a, 1923. Serial I m 688,986.

The invention consists in a novel arrange-- ment for securing a handle to a heated tool,

7 the object being to prevent heat conduction and radiation to the handle andat the same time to provide a simple and durable contri soldering iron,

goup with a suitable electrical heating device not tion their peripheries by screws or rivets handle G. The disks D and fromeach other and secured together shown) enclosed within the casing B. e casin is rovided with a reduced shank poro, tubular construction to which is secured a dished diskD and a similar disk E is mounted upon a tube F su porting the are spaced at H to prevent the heatirom being conducted from the casing C to the handle G. In order to limit the area of'contact between the two d sks, one of them is preferably provided with rounding In I through which the r1 vets' are inserte and by this means the disks are securely held in spaced relation to each other. The disks are also oppositely dished to provide a greater clearance between the center portions than at the peripheries. Preferably the disks are flared inwardly to form sockets J and K respectively for receiving co nding-tubes C and F which are secured thereto by brazing or other suitable means. L is a tubular insulator which extends from the casing B to the-ham dle G through which the terminals for the heating unit are passed.

Wit the construction as described, the heat from the tool can be conducted to the handle only which have a prevents any limited area of contact, which amount of heat from passmg.- The also form a shield for the handle reventingradiation from the tool from being projected to the handle. What we claim as our invention is 1. The combination with a tool adapted to lie-heated, of a handle therefor, and means:

in connection with an elecing' their cured to said handle and said tool, and their together by rivets or tilting the only of handle,

along their peripheral portions with through the plates D andE means including for insulating the handle from the tool, said means including a pair of spaced plates rcspectively secured to said handle and said tool and connected together at spaced points along their peripheral portions.

. 2. The combination with a tool adapted to be heated, of a handle therefor, a pair of spaced' plates respectively secured to said handle and said tool for insulating the han dle from the tool. and means for'securing said plates together at their peripheries through a'plurality of relatively small contacting areas, the said contacting areas being 4 so arranged that the major portion of the peripheries of the said disks are spaced" from each other. V a

3. The combination with steel adapted to be heated, of ahandle therefor, and means for insulatin the handle from the tool, said means inclu g-a pair of 4 central portions respectively seperipheral' rt'ons connected e like having relativel small cross sectional area, the portions of e immediately adjacent thesaid rivets constisaid disks; 7

' 4; The combination with a tool adapted to be heated, of

casing and extending radially therefr0m, a handle for said tool, a tube secured to said a heat insulating disk mounted upon and means for securing said disks said tube,

together to align said tubular casing with i the tubefor saidhandle.

dished disks havcontact between the j a tubular casing for sand .tool, a heat insulating disk secured to sa1d tubular 5. A heat insulating coupling comprising a pair ofdisks respectively connected to the members to be insulated, and meansfor securing said disks together at spaced points ited area of contact.

e. The combination with a tool adapted a; Y

be'heated, of a handle therefor; and means forinsulating the handle from the tool, sa1d points, the said points conrality of spaced points of contact between a pair of spaced plates r e-'. spectively secured to said handle and sa1d, tool and connected together through a plulatin the handle from the tool, said means inclu ing a dished disk secured at its center to the tool, a second dished disk secured at its center to the handle. lugs formed around the periphery of one of the said disks, and means for securing the said disks together i at their peripheries, the said lugs constituting the only points of contact between the said disks.

8. The combination with a toe-l adapted to be heated, and a handle for the said tool, of a heat insulating coupling for securing the handle to the tool the said coupling comprising a pair of dished disks secured respectively to the tool and to the handle and to each other, the said disks having relatively large diameters for shielding the handle from the heat radiatedby the tool, and contacting with each other at only a limited number of points for decreasing the heat transferred by conduction from the one disk to the other.

In testimony whereof we aflix our signatures.

FRANK KUHN. LAURENCE H. THOMAS. 

